Picker-staff check for looms



(No Model.)

W. J. HULFORD & F. TILLOTSON.

PIGKER STAFF CHECK FOR Looms;

No. 374,835. Patented Dec. 13, 1887.

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' UNr'ran STATES PATENT orm a WILLIAM J. HULFORD AND FREDERICKTILLOTSON, OF LAVVRENOE,

MASSACHUSETTS.

PlCKER-STAFF CHECK FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 374,835, dated December13, 185.7.

Application filed May 4, 1887. Serial No. 237,082. (No model.)

To all whom, it may concern Be it known that we, WILLIAM J. HUL- ronnand FREDERICK TrLLorsoN, both of Lawrence, in the county of Essex, Stateof Massachusetts, have invented a certain new and useful Improvement inPicker-StaffOhecks for Looms, of which the following is a descriptionsufficiently full, clear, and exact to enable any person skilled in theart or science to which said invention appertains to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specification, in which- Figure 1 is a side elevation showingourimproved picker-staff check in position for use on the lay of a loom,the picker-staffs and certain parts of the loom being represented asbroken off or removed; Fig. 2, a bottom plan view showing the check asapplied to the lay, the picker-staff being represented in crosssectionand the lay detached from the loom and broken oft; Fig. 3, a view of thecheck-desponding parts in the different figures of the:

drawings.

Our invention relates to that class of pickerstaff checks which areattached to the lay of the loom; and it consists in a novel constructionand arrangement of parts, as hereinafter more fully set forth andclaimed, the object being to produce a simpler, cheaper, and moreeffective device of this character than is now in ordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following explanation.

In the drawings, A represents the pickerstaff, B the picker, and O thelay of the loom, these parts being all of the ordinary form andconstruction.

A long flat steel spring, D, has one of its ends rigidly secured by ascrew, 00, to the under side of the lay, near each end thereof, the

said staff and the slot or path in which it moves back and forth areindicated by dotted lines. A tension-slide, E, is provided forregulating the tension of each of the springs D. The slides arerespectively composed of a single piece of wire bent to form theelongated body or loop a, as shown in Fig. 2, and downwardly-projectingU-shaped' bracket f, and are secured to the under side of the lay byscrews r, which pass through'the loops 2, the free ends of the springsDresting in the brackets f. By loosening the screws 1' and moving theslides more or less thereon laterally of the lay the springs D will beprojected more or less into the paths of the picker-staffs, whereby thetension or pressure of the springs on the staffs is regulated. When theslides are adj usted to secure the desired tension,the screws are againtightened.

From the foregoing it will be obvious that when the shuttleis thrown andcomes into contact with the pickerB on the staff A said stafi will beforced against the spring D, striking said spring in the vicinity of thepoint a and forcing it back out of the path m, thereby graduallyretarding the speed of the shuttle 'until it arrives at the end of itsrace, thus enward, so that when the staff has arrived at y it will besecurely held or prevented from re bounding and throwing the shuttleback in the race, thus utilizing the full length of the box-or race ateach pick, and securing better results than are possible where thevibratory movements of the upper end of the picker staff are notgradually retarded and the vibratory movements of its upper endcontro1led,as described.

A round spring, D, may also be employed instead of a fiat one, ifdesired, although weloop 2, provided with the U-shaped bracket f, saidbody and bracket being integral, or composed of a single piece of wire,and ascrew for adj ustably securing said'slide to the lay C, incombination with the picker-stall A and flat steel spring D, bent orcurved laterally at its center, as shown at d, and the screw as, forsecuring said spring to the lay, the free end of said spring beinginserted in the bracket f of said slide, and all constructed andarranged to operate substantially as and for the purpose shown anddescribed.

WILLIAM J. HULFORD. FREDERICK TILLOTSON.

Witnesses:

CHARLES U. BELL, JOHN H. HULFORD.

